1） About 40 _____of the population of that country____on farms.A.percent;lives B.percent;live C.percents;live D.percents
问题描述：
1） About 40 _____of the population of that country____on farms.A.percent;lives B.percent;live C.percents;live D.percents;lives 为什么选B,40 后面不用percent的复数吗?About 40 _____of the population也不是复数吗?补充：this kind of books和Books of this kind 的区别,那个是复数那个是单数?2）The bell is rung if there is a fire.为什么is后面用rung,不用runging呢?3） l have taken care of your children ___ you were away.A.during B.since C.except D.while 我怎么感觉B也对呢?4） He is my son,_____ a better son doesn't exist.A.but B.than C.against D.than who 我看不懂句子意思了,也不知道这是什么从句?D）
答
1,percent百分之的意思,当然是无复数的说法啦.this kinds of book书的种类,Book of this kind 这种书 2,rung被动语态 3,用since这句话就应该改成l have taken care of your children since you is away.或l had take...